CN2450417Y

CN2450417Y - Double-action radiating fan

Info

Publication number: CN2450417Y
Application number: CN 00249890
Authority: CN
Inventors: 庄文豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-02
Filing date: 2000-11-02
Publication date: 2001-09-26
Anticipated expiration: 2010-11-02

Abstract

The utility model relates to a double-action heat radiating fan, which is characterized in that a fan body is composed of two parts of an axial flow fan and a centrifugal fan. Primarily, the top of the lower end part is used as a round top body structure, the absorption wind force provides large airflow to a lower centrifugal fan along a round top body cambered surface, a fan blade carries out airflow by a centrifugal state to produce maximum wind force, and the heat radiating efficiency is improved.

Description

The dual effect type radiation fan

The relevant dual effect type radiation fan of the utility model is meant that especially a kind of air-flow can the suction in the axial flow mode take out of with centrifugal kenel and can produce the fan body of maximum wind power.

Because general radiation fan design, system constitutes with flat cartridge type attitude, outside tube, form flabellum, now because of the restriction of die sinking delivery, so the flabellum of general fan also can't be side by side on same axis with flabellum, make two flabellums isolate an intersegmental distance, with regard to mechanics, traditional radiation fan causes the air output of diffusing leaf to improve because of the structure Design problem, and then coefficient of heat transfer can't be promoted always, and the design of integral body often feels that following disappearance is arranged after the person uses after testing:

First: because traditional flabellum upper end be the plane, so the suction air volume that produced of flabellum rotation can be because no boot media, and the air quantity that makes fan that the upper end air-flow is brought into is quite limited, supplies the wind-force of flabellum release quite little.

Second: because distance is quite big between flabellum and the flabellum, causes air quantity to concentrate and take out of, air quantity presents diffusion, so the air quantity of sending is quite not enough, can't reach radiating effect.

In view of present fan ubiquity has above-mentioned problem, the purpose of this utility model provides a kind of dual effect type radiation fan, to improve its air quantity and radiating efficiency.

Technological means and structure function about the utility model, specify as follows: fan main body is formed two partly, the upper end is the round bump structure partly, and divide equally and form some flabellums, lower end part then its top is the tube structure of dome body, and circumference is divided equally centrifugal to fan with the corresponding combination of upper end flabellum is set in the same manner, and upper and lower end combination then promptly constitutes the utility model fan main body.

Because top, lower end dome body cambered surface, make the suction of flabellum rotation generation, absorbing air-flow is directed into centrifugal to fan along the dome body cambered surface, take out of with centrifugal air-flow being concentrated to fan, because the utility model flabellum is divided into two, die sinking is made respectively, via last, after the flabellum assembly of lower end, two flabellums can be formed the configuration (flabellum upper end overlaps same axial location separate configuration with another flabellum lower end) of same axis, make the air-flow that enters by the top be concentrated in this zone, take out of through the flabellum rotation again, present the concentrated of maximum quantity of wind and send, thereby can promote radiating efficiency.

Below in conjunction with preferred embodiment and accompanying drawing thereof, details are as follows to structure of the present utility model, feature and effect thereof:

Fig. 1 is the three-dimensional exploded view of the utility model preferred embodiment.

Fig. 2 is the three-dimensional combination figure of the utility model preferred embodiment.

Fig. 3 is the assembled sectional view of the utility model preferred embodiment.

Fig. 4 is the airflow analysis figure () of the utility model.

Fig. 5 is the airflow analysis figure (two) of the utility model.

Fig. 1, Fig. 2 are respectively the three-dimensional exploded view and the three-dimensional combination figure of the utility model preferred embodiment, and fan main body of the present utility model is divided into axial flow to fan 1 and centrifugal to 2 liang of parts of fan; Wherein

The axial flow of this upper end is round bump 10 structures to fan 1, has extended some flabellums 11 from the center to excircle with dividing equally;

This lower end is centrifugal to be tube structure to 2 in fan, its top is a dome body 22, dome body 22 is established concave face 220, keeping supplying the round bump 10 of end part inserts, again with lid 221 covers solid (as shown in Figure 3), and outer rim is identical to have extended some flabellums 20, flabellum 20 positions are corresponding with the flabellum 11 of upper end round bump 10 with quantity, cylindrical shell central authorities are axis hole 23, wear and be connected and fixed round bump and cylindrical shell for rotating shaft 3, make axial flow constitute the radiation fan main body of the utility model with centrifugal to fan 2, impose coil 4 and motor 5 again to fan 1, with rotating shaft 3 fan is fixed on the radiator, the radiating efficiency and the air quantity of the best is provided.

See also Fig. 4, Fig. 5 again, when flabellum is subjected to the motor driven rotation, the upper end air-flow is rotated suction and is directed into centrifugal to fan 2 along dome body 22 cambered surfaces, because the configuration of fan is a flabellum 11 upper ends partly partly to be listed in same axis with another flabellum 20 lower ends and two partly overlapping, the air-flow of order importing is concentrated in this zone, concentrate again and send with centrifugal kenel, the unlikely diffusion of air quantity, and then reach the purpose that improves air quantity and radiating efficiency.

Claims

1, a kind of dual effect type radiation fan, comprise rotating shaft, coil, motor and fan body, it is characterized in that said fan body is made of to fan and centrifugal combining between the higher and lower levels to fan axial flow, wherein axial flow is a round bump to fan, outside also circumference has extended flabellum with dividing equally from the center, and round bump is fixed in centrifugal on fan, and this is centrifugal to be that a top is the cylindrical shell of dome body to fan, and cylindrical shell has outwards extended flabellum, and makes flabellum and upper shaft flow to the corresponding linking of flabellum of fan.